Boxbrownie wrote:

Compression test first I reckon.......I wonder if there might have been a bit of water ingestion?

alex_pescaru wrote:

It's obvious, from the engine vibrations and frequency of sound, that one of the four cylinder entities is not working properly.
I, for one, I would disconnect the electrical connection to each injector, one injector at the time, and see if it's the same.

Beware, if you will do it!!!!
Being piezo injectors, DO NOT disconnect them when the engine is running, because you can remain with an open injector and you don't want an injector to continuously inject fuel from the high pressure rail with the engine running...
Stop engine, disconnect injector, start engine, listen, stop engine..... etc.

Disclaimer: of course, if you will do it, you will do it at your own risk!

.

Take the fuse out for the pump to stop the flow, but put the injector removed into a small container just catch residual fuel. Regards

David

Lovely i6 has now gone, but not me......

Please let me know if anything in my post offends you, as I may wish to offend you again......

GaryLaird wrote:

Interesting theory.....I never considered that its misfiring. Easy enough test to do. Will report back tomorrow on this.

Boxbrownie wrote:

Take the fuse out for the pump to stop the flow, but put the injector removed into a small container just catch residual fuel.

Only issue now is finding the correct tester kit that will work with the LR2 injector mountings. The ones that are affordable, I don't think would work  2010 FL2 TD4 GS

alex_pescaru wrote:

GaryLaird wrote:

Interesting theory.....I never considered that its misfiring. Easy enough test to do. Will report back tomorrow on this.

Not misfiring... Too much fuel...
Starting from the hypothesis that the injectors are functioning correctly, because you've changed them....
I suspect that one or both intake valve remains almost closed for a certain cylinder and the fuel injected is too much for this situation, in absence of air.
Hence the smoking issue too...

Again, beware of dangers for injectors disconnection. Never when running!!!
Read this: Disconnecting Piezo Common Rail Injectors

No.

Not sure if this helps or not, but listening to your engine video above, my Freely made that exact clattering sound for the ten seconds or so before it stalled and went dead - a valve had dropped into the number two pot and destroyed it plus the head and block.

That was just over six weeks ago, and the exchange engine now fitted turned out to have two faulty injectors... yes, really... and while the smoke and rough running at cold start was there, the exchange unit never gave any of that clattering noise at all with the faulty injectors and everything else new inside the engine, so I would agree with Alex and look also at moving parts inside yours... and take care that you don’t experience what happened to mine... my bank account was dented much more by that valve than the original number two piston!! Lexus RX450H - 500 mile a week commuter- I just couldn’t trust in a newer RRS or DS for that….
2009 Freelander 2 HSE... 155K miles, we’ve done 135k of those, has done brilliantly on the commute and staying firmly put as car two in the household
2002 Jaguar XK8 Coupe... fun, fast, ours for 12 years and owes us nothing - so staying with us too…

Deafender wrote:

Not sure if this helps or not, but listening to your engine video above, my Freely made that exact clattering sound for the ten seconds or so before it stalled and went dead - a valve had dropped into the number two pot and destroyed it plus the head and block.

That was just over six weeks ago, and the exchange engine now fitted turned out to have two faulty injectors... yes, really... and while the smoke and rough running at cold start was there, the exchange unit never gave any of that clattering noise at all with the faulty injectors and everything else new inside the engine, so I would agree with Alex and look also at moving parts inside yours... and take care that you don’t experience what happened to mine... my bank account was dented much more by that valve than the original number two piston!!

Obviously not what I want to hear but of course you could be entirely correct. Local to me there is a backstreet 4x4 garage specializing in Land Rover and they sell/use a lot of 2nd hand parts.....a bit of a breakers yard as well as a garage. I think I might throw the car at them to see if they can figure out the issue and indeed source a replacement engine if required. I still have my fingers crossed that its not a terminal engine problem (at only 65k miles) but prepared for the worst.  2010 FL2 TD4 GS

alex_pescaru wrote:

It's obvious, from the engine vibrations and frequency of sound, that one of the four cylinder entities is not working properly.
I, for one, I would disconnect the electrical connection to each injector, one injector at the time, and see if it's the same.

Beware, if you will do it!!!!
Being piezo injectors, DO NOT disconnect them when the engine is running, because you can remain with an open injector and you don't want an injector to continuously inject fuel from the high pressure rail with the engine running...
Stop engine, disconnect injector, start engine, listen, stop engine..... etc.

Disclaimer: of course, if you will do it, you will do it at your own risk!

.

Managed to get on to this today. Disconnecting each injector in turn I found that injector 1 & 4 seem to make no difference when disconnected. Injector 2 & 3.....although the difference is subtle given the amount of vibration and jugging that's going on would stall the engine after a few seconds. So this suggests that cylinder 1 & 4 are or at least having little effect! So whats next....compression test? I guess its either a fault in whatever controls the injectors or something rather terminal in cylinders 1&4? 2010 FL2 TD4 GS